perl - 使用或不使用双引号时打印数组变量

Question

当我学习打印数组变量时，我发现使用双引号时插入了空格。代码片段如下。你能告诉我为什么吗？

#!/usr/bin/perl -w
use strict;
use warnings;

my @str_array = ("Perl","array","tutorial");
my @int_array = (5,7,9,10);

print @str_array;
print "\n";
# added the double quotes
print "@str_array";
print "\n";
print @int_array;
print "\n";
# added the double quotes
print "@int_array";

输出:

Perlarraytutorial
Perl array tutorial
57910
5 7 9 10

Answer 1

这是回答您问题的 perlfaq:

Why do I get weird spaces when I print an array of lines?